The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2004
Filed:
Feb. 14, 2002
Shigetaka Suzuki, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A microwave oscillator includes a transistor for oscillation, an insulating substrate on which the transistor is mounted, a first strip conductor which is attached to the insulating substrate and which has one end connected to the output terminal of the transistor, and a second strip conductor which is attached to the insulating substrate and which has one end connected to input terminal of the transistor. The microwave oscillator further includes a TE01-mode dielectric resonator which couples with the first strip conductor and the second strip conductor, and a varactor diode. The varactor diode has one end connected to the other end of the first strip conductor or the other end of the second strip conductor, and the other end is RF-grounded, such that the capacitance of the varactor diode can be changed.